/* ============================================================================
 * ltc-app.css — the LTC Workbench shell (hub + six standards modules)
 * ----------------------------------------------------------------------------
 * One application frame for seven pages: a module rail, a workspace with tool
 * tabs, and an inspector. The pages differ only in what is inside the panels.
 *
 * Tokens are NOT defined here. Each page defines the --bg1 … --r set inline,
 * because the RZ diagram engine resolves every colour to those properties and
 * its gate (T3) reads the page source to prove they exist. This file only uses
 * them. documentation/design.md: 4px radius, 1px tier-2 hairlines, no resting
 * shadow, no glow, mono for numbers/units/tags only, amber = active/caution.
 * ==========================================================================*/

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
/* The app scrolls inside its panes; the document never does. Without this the
   closed inspector drawer (parked off-screen right) let a tablet scroll the
   whole page sideways by its width. */
html, body { height: 100%; overflow: clip; }
body {
  background: var(--bg1);
  color: var(--t1);
  font: 400 15px/1.5 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}
a { color: var(--c); }
button, input, select { font: inherit; color: inherit; }
.mono, .num { font-family: 'JetBrains Mono', 'SF Mono', monospace; font-variant-numeric: tabular-nums; }
:focus-visible { outline: 2px solid var(--o); outline-offset: 2px; }
[hidden] { display: none !important; }

/* ---- frame ---------------------------------------------------------------- */
.ltc-app {
  display: grid;
  grid-template-columns: 208px minmax(0, 1fr) 320px;
  grid-template-rows: 48px minmax(0, 1fr);
  grid-template-areas: "top top top" "rail work insp";
  height: 100vh;
  height: 100dvh;
}
.ltc-top {
  grid-area: top;
  display: flex; align-items: center; gap: 16px;
  padding: 0 16px;
  border-bottom: 1px solid var(--bd);
  background: var(--bg1);
}
.ltc-brand { display: flex; align-items: center; gap: 10px; color: var(--t1); text-decoration: none; min-width: 0; }
.ltc-brand svg { color: var(--o); flex: none; }
.ltc-brand b { font-weight: 600; font-size: 14px; white-space: nowrap; }
.ltc-crumb { font: 500 11px/1 'JetBrains Mono', monospace; letter-spacing: .12em; text-transform: uppercase; color: var(--t3); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ltc-top-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.ltc-iconbtn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-width: 36px; height: 32px; padding: 0 10px;
  background: transparent; border: 1px solid var(--bd); border-radius: 4px;
  color: var(--t2); cursor: pointer; text-decoration: none; font-size: 13px;
  transition: border-color .15s ease-out, color .15s ease-out;
}
@media (hover: hover) { .ltc-iconbtn:hover { border-color: var(--bd2); color: var(--t1); } }
.ltc-iconbtn:active { transform: scale(.97); }

/* ---- module rail ------------------------------------------------------------ */
.ltc-rail {
  grid-area: rail;
  border-right: 1px solid var(--bd);
  padding: 12px 8px;
  overflow-y: auto;
  display: flex; flex-direction: column; gap: 2px;
}
.ltc-rail-h { font: 500 10px/1 'JetBrains Mono', monospace; letter-spacing: .16em; text-transform: uppercase; color: var(--t3); padding: 10px 10px 6px; }
.ltc-mod {
  display: grid; grid-template-columns: 24px 1fr; grid-template-rows: auto auto; column-gap: 10px;
  padding: 8px 10px; border-radius: 4px;
  color: var(--t2); text-decoration: none;
  transition: background-color .15s ease-out, color .15s ease-out;
}
.ltc-mod svg { grid-row: 1 / 3; align-self: center; color: var(--t3); }
.ltc-mod b { font-weight: 600; font-size: 13px; color: var(--t1); }
.ltc-mod span { font-size: 11.5px; color: var(--t3); line-height: 1.3; }
@media (hover: hover) { .ltc-mod:hover { background: var(--bg2); } }
.ltc-mod[aria-current="page"] { background: var(--bg2); box-shadow: inset 0 -2px 0 var(--o); }
.ltc-mod[aria-current="page"] svg, .ltc-mod[aria-current="page"] b { color: var(--o); }

/* ---- workspace ------------------------------------------------------------- */
.ltc-work { grid-area: work; overflow-y: auto; overscroll-behavior: contain; min-width: 0; }
.ltc-head { padding: 20px 24px 0; }
.ltc-eyebrow { font: 500 11px/1 'JetBrains Mono', monospace; letter-spacing: .16em; text-transform: uppercase; color: var(--t3); }
.ltc-head h1 { font-size: 22px; line-height: 1.25; font-weight: 600; margin: 6px 0 4px; letter-spacing: -.01em; }
.ltc-head p { margin: 0; color: var(--t2); font-size: 14px; max-width: 72ch; }
.ltc-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.ltc-chip {
  font: 500 11px/1 'JetBrains Mono', monospace; letter-spacing: .04em;
  padding: 5px 7px; border: 1px solid var(--bd); border-radius: 2px; color: var(--t2);
}
.ltc-chip[data-tone="caution"] { color: var(--o); border-color: var(--o); }

.ltc-tabs {
  position: sticky; top: 0; z-index: 2;
  display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none;
  padding: 0 24px; margin-top: 16px;
  background: var(--bg1);
  border-bottom: 1px solid var(--bd);
}
.ltc-tabs::-webkit-scrollbar { display: none; }
.ltc-tab {
  flex: none; display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 12px; margin-bottom: -1px;
  background: none; border: 0; border-bottom: 2px solid transparent;
  font: 500 12px/1 'JetBrains Mono', monospace; letter-spacing: .06em; text-transform: uppercase;
  color: var(--t3); cursor: pointer; white-space: nowrap;
  transition: color .15s ease-out, border-color .15s ease-out;
}
.ltc-tab svg { color: currentColor; }
@media (hover: hover) { .ltc-tab:hover { color: var(--t1); } }
.ltc-tab[aria-selected="true"] { color: var(--o); border-bottom-color: var(--o); }

.ltc-panel { padding: 20px 24px 40px; }
.ltc-panel[hidden] { display: none; }
.ltc-panel > * + * { margin-top: 16px; }

/* a tool: controls on the left, live output on the right */
.ltc-tool { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 16px; align-items: start; }
.ltc-box { border: 1px solid var(--bd); border-radius: 4px; background: var(--bg1); }
.ltc-box-h {
  display: flex; align-items: center; gap: 8px; justify-content: space-between;
  padding: 10px 12px; border-bottom: 1px solid var(--bd);
  font: 500 11px/1 'JetBrains Mono', monospace; letter-spacing: .12em; text-transform: uppercase; color: var(--t3);
}
.ltc-box-b { padding: 12px; }
.ltc-box-b > * + * { margin-top: 12px; }

/* fields */
.ltc-field { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 4px 8px; }
.ltc-field label { font-size: 13px; color: var(--t2); }
.ltc-field output, .ltc-field .unit { font: 500 13px/1 'JetBrains Mono', monospace; color: var(--t1); font-variant-numeric: tabular-nums; }
.ltc-field input[type="range"] { grid-column: 1 / -1; width: 100%; accent-color: var(--o); height: 24px; margin: 0; }
.ltc-input {
  width: 96px; height: 32px; padding: 0 8px; text-align: right;
  background: var(--bg2); border: 1px solid var(--bd); border-radius: 4px;
  font: 500 16px/1 'JetBrains Mono', monospace; font-variant-numeric: tabular-nums;
}
.ltc-select {
  width: 100%; height: 34px; padding: 0 8px;
  background: var(--bg2); border: 1px solid var(--bd); border-radius: 4px; font-size: 16px;
}
.ltc-seg { display: flex; border: 1px solid var(--bd); border-radius: 4px; overflow: hidden; }
.ltc-seg button {
  flex: 1; min-height: 34px; padding: 0 8px; background: none; border: 0; border-left: 1px solid var(--bd); white-space: nowrap;
  font: 500 12px/1 'JetBrains Mono', monospace; color: var(--t2); cursor: pointer;
  transition: background-color .15s ease-out, color .15s ease-out;
}
.ltc-seg button:first-child { border-left: 0; }
.ltc-seg button[aria-pressed="true"] { background: var(--bg3); color: var(--o); }
.ltc-btn {
  display: inline-flex; align-items: center; gap: 8px; min-height: 34px; padding: 0 12px;
  background: var(--bg2); border: 1px solid var(--bd2); border-radius: 4px; cursor: pointer;
  font: 500 12px/1 'JetBrains Mono', monospace; letter-spacing: .04em; text-transform: uppercase; color: var(--t1);
  transition: border-color .15s ease-out;
}
@media (hover: hover) { .ltc-btn:hover { border-color: var(--o); } }
.ltc-btn:active { transform: scale(.97); }

/* readouts */
.ltc-readouts { display: grid; grid-template-columns: repeat(auto-fit, minmax(132px, 1fr)); border: 1px solid var(--bd); border-radius: 4px; }
.ltc-ro { padding: 10px 12px; border-right: 1px solid var(--bd); border-bottom: 1px solid var(--bd); margin: 0 -1px -1px 0; min-width: 0; }
.ltc-ro dt { font: 500 10.5px/1.2 'JetBrains Mono', monospace; letter-spacing: .1em; text-transform: uppercase; color: var(--t3); }
.ltc-ro dd { margin: 6px 0 0; font: 500 20px/1.1 'JetBrains Mono', monospace; font-variant-numeric: tabular-nums; color: var(--t1); }
/* the number never breaks; a long unit (kgCO₂/kWh) drops under it instead of spilling out of the box */
.ltc-ro dd small { display: inline-block; font-size: 12px; color: var(--t3); margin-left: 3px; white-space: nowrap; }
.ltc-ro[data-state="ok"] dd { color: var(--g); }
.ltc-ro[data-state="warn"] dd { color: var(--o); }
.ltc-ro[data-state="fail"] dd { color: var(--r); }

/* verdict line — state is carried by word AND colour (WCAG 1.4.1) */
.ltc-verdict { display: flex; align-items: baseline; gap: 10px; padding: 10px 12px; border: 1px solid var(--bd); border-radius: 4px; }
.ltc-verdict b { font: 600 12px/1 'JetBrains Mono', monospace; letter-spacing: .08em; text-transform: uppercase; }
.ltc-verdict span { font-size: 13.5px; color: var(--t2); }
.ltc-fit-v { margin: 0 0 12px; padding: 10px 12px; border: 1px solid var(--bd); border-left: 3px solid var(--o); border-radius: 4px; font-size: 14px; line-height: 1.5; }
.ltc-fit-v.ok { border-left-color: var(--g); }
.ltc-fit { display: inline-block; padding: 1px 6px; border: 1px solid currentColor; border-radius: 2px; font: 500 10.5px/1.4 'JetBrains Mono', monospace; letter-spacing: .06em; text-transform: uppercase; }
.ltc-fit.met { color: var(--g); } .ltc-fit.gap { color: var(--r); } .ltc-fit.verify { color: var(--o); }
.ltc-verdict[data-state="ok"] { border-color: var(--g); } .ltc-verdict[data-state="ok"] b { color: var(--g); }
.ltc-verdict[data-state="warn"] { border-color: var(--o); } .ltc-verdict[data-state="warn"] b { color: var(--o); }
.ltc-verdict[data-state="fail"] { border-color: var(--r); } .ltc-verdict[data-state="fail"] b { color: var(--r); }

/* reference tables: mono numbers, right-aligned, no zebra */
.ltc-table-wrap { overflow-x: auto; border: 1px solid var(--bd); border-radius: 4px; }
.ltc-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.ltc-table th, .ltc-table td { padding: 8px 10px; border-bottom: 1px solid var(--bd); text-align: left; vertical-align: top; }
.ltc-table th { font: 500 10.5px/1.2 'JetBrains Mono', monospace; letter-spacing: .1em; text-transform: uppercase; color: var(--t3); background: var(--bg2); white-space: nowrap; }
.ltc-table td.n, .ltc-table th.n { text-align: right; font-family: 'JetBrains Mono', monospace; font-variant-numeric: tabular-nums; white-space: nowrap; }
.ltc-table.ltc-hlt th, .ltc-table.ltc-hlt td { padding: 6px 6px; }
.ltc-table.ltc-hlt th { letter-spacing: .04em; }
.ltc-table tr:last-child td { border-bottom: 0; }
.ltc-table tr[data-hit] { background: var(--bg3); }
.ltc-table tr[data-hit] td:first-child { color: var(--o); }
.ltc-note { font-size: 12.5px; color: var(--t3); line-height: 1.5; }
.ltc-note b { color: var(--t2); font-weight: 600; }
.ltc-src { font: 400 11.5px/1.5 'JetBrains Mono', monospace; color: var(--t3); }

/* diagram canvas: scrolls when the figure is wider than the pane, never shrinks type under the floor */
.ltc-canvas { overflow-x: auto; border: 1px solid var(--bd); border-radius: 4px; background: var(--bg1); }
.ltc-canvas svg { display: block; margin: 0 auto; height: auto; }
.ltc-canvas .rzd-hit { cursor: pointer; outline: none; }
.ltc-canvas .rzd-hit:focus-visible { stroke: var(--o); stroke-width: 2; }
@media (hover: hover) { .ltc-canvas .rzd-hit:hover { stroke: var(--bd2); stroke-width: 1; } }
.ltc-canvas [data-rzd-state="selected"] { stroke: var(--o); stroke-width: 1.6; }
.ltc-canvas [data-rzd-state="maint"] { stroke: var(--o); stroke-dasharray: 4 3; }
.ltc-canvas [data-rzd-state="fail"] { stroke: var(--r); stroke-dasharray: 2 3; }
.ltc-canvas [data-rzd-state="dead"] { opacity: .35; }
.ltc-canvas [data-rzd-state="live"] { stroke: var(--g); }
/* A connector carrying load moves. A solid line becomes 9-3 dashes; a line that
   already has a pattern keeps it, so the legend still reads. Each pattern moves by
   exactly one of its own periods per cycle, so the loop never snaps back. */
.ltc-canvas path[data-rzd-pulse] { stroke-dasharray: 0.1 23.9; animation: ltc-flow-24 1.2s linear infinite; pointer-events: none; }
@keyframes ltc-flow-24 { to { stroke-dashoffset: -24; } }
.ltc-canvas path[data-rzd-state="flow"][stroke-dasharray="6,4"] { animation: ltc-flow-10 0.8s linear infinite; }
.ltc-canvas path[data-rzd-state="flow"][stroke-dasharray="1.5,3"] { animation: ltc-flow-9 0.8s linear infinite; }
.ltc-canvas path[data-rzd-state="flow"][stroke-dasharray="8,3,1.5,3"] { animation: ltc-flow-31 1.6s linear infinite; }
@keyframes ltc-flow-12 { to { stroke-dashoffset: -12; } }
@keyframes ltc-flow-10 { to { stroke-dashoffset: -10; } }
@keyframes ltc-flow-9 { to { stroke-dashoffset: -9; } }
@keyframes ltc-flow-31 { to { stroke-dashoffset: -31; } }
@media (prefers-reduced-motion: reduce) {
  .ltc-canvas path[data-rzd-state="flow"] { animation: none; }
  .ltc-canvas path[data-rzd-pulse] { display: none; }
}

/* ---- inspector ------------------------------------------------------------- */
.ltc-insp {
  grid-area: insp;
  border-left: 1px solid var(--bd);
  overflow-y: auto; overscroll-behavior: contain;
  display: flex; flex-direction: column;
}
.ltc-insp-h { display: flex; align-items: center; gap: 10px; padding: 14px 16px 10px; border-bottom: 1px solid var(--bd); }
.ltc-insp-h svg { color: var(--o); flex: none; }
.ltc-insp-h h2 { margin: 2px 0 0; font-size: 15px; font-weight: 600; line-height: 1.3; }
.ltc-insp-close { display: none; margin-left: auto; }
.ltc-insp-b { padding: 12px 16px 24px; font-size: 13.5px; color: var(--t2); }
.ltc-insp-b > * + * { margin-top: 12px; }
.ltc-insp-b h3 { margin: 16px 0 6px; font: 500 10.5px/1.2 'JetBrains Mono', monospace; letter-spacing: .14em; text-transform: uppercase; color: var(--t3); }
.ltc-kv { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; margin: 0; }
.ltc-kv dt { color: var(--t3); font-size: 12.5px; }
.ltc-kv dd { margin: 0; text-align: right; overflow-wrap: anywhere; font: 500 13px/1.35 'JetBrains Mono', monospace; color: var(--t1); font-variant-numeric: tabular-nums; }
.ltc-refs { list-style: none; margin: 0; padding: 0; }
.ltc-refs li { padding: 8px 0; border-top: 1px solid var(--bd); }
.ltc-refs li:first-child { border-top: 0; }
.ltc-refs code { font: 600 11.5px/1.4 'JetBrains Mono', monospace; color: var(--o); }
.ltc-refs p { margin: 3px 0 0; font-size: 13px; color: var(--t2); }
.ltc-refs a { font-size: 12.5px; }
.ltc-empty { color: var(--t3); font-size: 13px; }

/* ---- access gate (kept from the module pages; fail-closed) ----------------- */
.root-gate { position: fixed; inset: 0; z-index: 50; display: none; align-items: center; justify-content: center; padding: 16px; background: rgba(5, 8, 15, .62); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); }
body.locked .root-gate { display: flex; }
body.locked .ltc-app { filter: blur(8px); pointer-events: none; user-select: none; }
.root-gate-card { width: min(440px, 100%); background: var(--bg2); border: 1px solid var(--bd2); border-radius: 4px; padding: 24px; text-align: center; color: var(--t1); }
.root-gate-card .lock { color: var(--o); font-size: 22px; }
.root-gate-card h2 { margin: 8px 0; font-size: 18px; }
.root-gate-card p { margin: 0 0 12px; color: var(--t2); font-size: 14px; }
.root-gate-actions { display: flex; gap: 8px; justify-content: center; }
.root-gate-actions button, .root-gate-actions a { min-height: 40px; padding: 0 16px; border-radius: 4px; border: 1px solid var(--bd2); background: var(--bg3); color: var(--t1); cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; font-size: 14px; }
.root-gate-actions .login { border-color: var(--o); color: var(--o); }
.root-gate-note { font-size: 12px !important; color: var(--t3) !important; margin-top: 12px !important; }
.skip-link { position: absolute; top: -50px; left: 0; background: var(--bg3); color: var(--t1); padding: 10px 16px; z-index: 100; }
.skip-link:focus { top: 0; }

/* ---- tablet: inspector becomes a drawer ------------------------------------ */
@media (max-width: 1279px) {
  .ltc-app { grid-template-columns: 196px minmax(0, 1fr); grid-template-areas: "top top" "rail work"; }
  .ltc-insp {
    position: fixed; top: 48px; right: 0; bottom: 0; width: min(360px, 92vw); z-index: 20;
    background: var(--bg1); border-left: 1px solid var(--bd2);
    transform: translateX(100%); transition: transform .22s cubic-bezier(.32, .72, 0, 1);
  }
  .ltc-app[data-insp="open"] .ltc-insp { transform: none; }
  .ltc-insp-close { display: inline-flex; }
}
@media (max-width: 1023px) {
  .ltc-tool { grid-template-columns: minmax(0, 1fr); }
}

/* ---- phone: rail becomes a bottom bar, inspector a bottom sheet ------------ */
@media (max-width: 767px) {
  body { font-size: 15px; }
  .ltc-app {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: 48px minmax(0, 1fr) auto;
    grid-template-areas: "top" "work" "rail";
  }
  .ltc-crumb { display: none; }
  .ltc-rail {
    flex-direction: row; overflow-x: auto; scrollbar-width: none; gap: 0;
    border-right: 0; border-top: 1px solid var(--bd); padding: 0 4px;
    padding-bottom: env(safe-area-inset-bottom); background: var(--bg1);
  }
  .ltc-rail::-webkit-scrollbar { display: none; }
  .ltc-rail-h, .ltc-mod span { display: none; }
  .ltc-mod { flex: 1 0 64px; grid-template-columns: 1fr; grid-template-rows: 22px auto; justify-items: center; row-gap: 3px; padding: 8px 4px; border-radius: 0; }
  .ltc-mod svg { grid-row: 1; }
  .ltc-mod b { font: 500 10px/1 'JetBrains Mono', monospace; letter-spacing: .04em; color: var(--t2); }
  .ltc-head { padding: 16px 16px 0; }
  .ltc-head h1 { font-size: 19px; }
  .ltc-tabs { padding: 0 12px; }
  .ltc-panel { padding: 16px 16px 32px; }
  .ltc-insp { top: auto; left: 0; right: 0; width: auto; height: 72dvh; border-left: 0; border-top: 1px solid var(--bd2); border-radius: 8px 8px 0 0; transform: translateY(100%); padding-bottom: env(safe-area-inset-bottom); }
  .ltc-app[data-insp="open"] .ltc-insp { transform: none; }
  .ltc-ro dd { font-size: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0s !important; }
}
@media print {
  html, body { height: auto; overflow: visible; }
  .ltc-app { display: block; height: auto; }
  .ltc-rail, .ltc-top-actions, .ltc-tabs, .root-gate { display: none !important; }
  .ltc-panel[hidden] { display: block; }
  .ltc-insp { position: static; transform: none; border: 0; }
}

/* ---- live plant (v3.14.0): parameters, balance, hover trace, scripts ---- */
.ltc-plant { margin: 0 0 12px; }
.ltc-plant-ctl { display: grid; gap: 12px; }
.ltc-plant-ctl > .ltc-seg { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.ltc-plant-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 10px 20px; }
.ltc-plant-bal { display: flex; flex-wrap: wrap; gap: 4px 8px; margin: 12px 0 0; padding: 8px 0; border-top: 1px solid var(--bd); border-bottom: 1px solid var(--bd);
  font: 400 12.5px/1.5 'JetBrains Mono', monospace; color: var(--t2); font-variant-numeric: tabular-nums; }
.ltc-plant-bal b { color: var(--t1); font-weight: 500; }
.ltc-plant-bal .sep { color: var(--t3); }
.ltc-h2 { font-size: 15px; font-weight: 600; color: var(--t1); margin: 24px 0 8px; }
.ltc-h3 { font-size: 13.5px; font-weight: 600; color: var(--t1); margin: 20px 0 6px; }
/* options: every row a full re-solve; Use / a bar end applies it to the shared plant */
.ltc-opt td:first-child { min-width: 190px; }
.ltc-opt-name { display: block; }
.ltc-opt-use { margin-top: 6px; padding: 3px 12px; font-size: 12px; }
.ltc-opt-cur { display: inline-block; margin-top: 6px; font: 500 10.5px 'JetBrains Mono', monospace; color: var(--o); letter-spacing: .06em; text-transform: uppercase; }
.ltc-tor { display: grid; gap: 6px; margin-top: 8px; }
.ltc-tor-row { display: grid; grid-template-columns: minmax(150px, 220px) 1fr 1fr; align-items: center; }
.ltc-tor-lbl { font-size: 13px; color: var(--t2); }
.ltc-tor-lbl small { font-family: 'JetBrains Mono', monospace; color: var(--t3); }
.ltc-tor-end { display: flex; align-items: center; gap: 6px; min-height: 30px; padding: 0; background: none; border: 0; cursor: pointer; font: 500 11.5px 'JetBrains Mono', monospace; color: var(--t2); }
.ltc-tor-end.l { flex-direction: row-reverse; border-right: 1px solid var(--bd2); }
.ltc-tor-end i { display: block; height: 16px; flex: none; opacity: .8; }
.ltc-tor-end.dn i { background: var(--g); }
.ltc-tor-end.up i { background: var(--r); }
.ltc-tor-end span { white-space: nowrap; }
@media (hover: hover) { .ltc-tor-end:hover span { color: var(--t1); } .ltc-tor-end:hover i { opacity: 1; } }
.ltc-tor-end:focus-visible { outline: 2px solid var(--o); outline-offset: 2px; }
@media (max-width: 640px) { .ltc-tor-row { grid-template-columns: 1fr 1fr; } .ltc-tor-lbl { grid-column: 1 / -1; } .ltc-tor-end { min-height: 44px; flex-direction: column; align-items: flex-start; justify-content: center; gap: 3px; padding: 0 4px; } .ltc-tor-end.l { flex-direction: column; align-items: flex-end; } }
.ltc-life-table { margin-top: 12px; }
.ltc-linkbtn { background: none; border: 0; padding: 0; color: var(--o); cursor: pointer; text-align: left; font: inherit; }
.ltc-linkbtn:hover { text-decoration: underline; }
.ltc-linkbtn:focus-visible { outline: 2px solid var(--o); outline-offset: 2px; }
.ltc-script-h { font: 500 11px/1.2 'JetBrains Mono', monospace; letter-spacing: .18em; text-transform: uppercase; color: var(--t3); margin: 14px 0 6px; }
.ltc-script-p { margin: 0; font-size: 13px; color: var(--t2); line-height: 1.5; }
.ltc-script-l { margin: 0; padding-left: 18px; font-size: 13px; color: var(--t2); line-height: 1.5; }
.ltc-script-l li { margin: 3px 0; }
/* hover trace: the block and its connectors stay, the rest steps back */
.ltc-canvas svg path[data-rzd-edge], .ltc-canvas svg rect[data-rzd-node] { transition: opacity 150ms ease; }
.ltc-canvas svg.is-tracing path[data-rzd-edge]:not([data-trace]) { opacity: .12; }
.ltc-canvas svg.is-tracing path[data-rzd-pulse]:not([data-trace]) { opacity: 0; }
.ltc-canvas svg.is-tracing rect[data-rzd-node]:not([data-trace]) { opacity: .4; }
.ltc-canvas svg.is-tracing rect[data-rzd-node][data-trace="self"] { stroke: var(--o); stroke-width: 1.6; }
.ltc-tip { position: fixed; z-index: 60; max-width: 300px; padding: 10px 12px; background: var(--bg2); border: 1px solid var(--bd2); border-radius: 4px;
  font-size: 12.5px; color: var(--t2); pointer-events: none; }
.ltc-tip-h { font-weight: 600; color: var(--t1); margin-bottom: 6px; }
.ltc-tip dl { display: grid; grid-template-columns: auto auto; gap: 3px 12px; margin: 0; }
.ltc-tip dt { color: var(--t3); }
.ltc-tip dd { margin: 0; text-align: right; font-family: 'JetBrains Mono', monospace; font-variant-numeric: tabular-nums; color: var(--t1); }
.ltc-tip-f { margin: 8px 0 0; padding-top: 6px; border-top: 1px solid var(--bd); font: 400 11.5px/1.4 'JetBrains Mono', monospace; color: var(--t3); }
.ltc-tip-n { margin-top: 6px; font-size: 12px; color: var(--t2); }
@media (prefers-reduced-motion: reduce) { .ltc-canvas svg path[data-rzd-edge], .ltc-canvas svg rect[data-rzd-node] { transition: none; } }
.ltc-views { margin: 0 0 8px; width: max-content; max-width: 100%; flex-wrap: wrap; }
.ltc-plant-fields .ltc-field .ltc-seg { grid-column: 1 / -1; width: max-content; max-width: 100%; }
/* ---- plant strip (v3.15.0): the one place the plant is edited ---- */
.ltc-ps { margin: 0 0 16px; border: 1px solid var(--bd); border-radius: 4px; background: var(--bg2); }
.ltc-ps-bar { display: flex; align-items: center; gap: 12px; padding: 8px 12px; flex-wrap: wrap; }
.ltc-ps-line { flex: 1 1 420px; display: flex; flex-wrap: wrap; gap: 2px 8px; margin: 0; font: 400 12.5px/1.6 'JetBrains Mono', monospace; color: var(--t2); font-variant-numeric: tabular-nums; }
.ltc-ps-line b { color: var(--t1); font-weight: 500; }
.ltc-ps-line .sep { color: var(--t3); }
.ltc-ps-panel { padding: 4px 12px 14px; border-top: 1px solid var(--bd); }
.ltc-ps-presets { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-bottom: 10px; }
.ltc-ps-bins { display: grid; gap: 6px; margin-top: 10px; font-size: 12.5px; color: var(--t2); }
.ltc-ps-bins textarea { width: 100%; font: 400 12px/1.4 'JetBrains Mono', monospace; }
.ltc-ps-binmsg { font-size: 12px; color: var(--t3); }
.ltc-ps-adv { margin-top: 14px; border-top: 1px solid var(--bd); padding-top: 8px; }
.ltc-ps-adv summary { cursor: pointer; font-size: 13px; color: var(--t2); }
.ltc-ps-adv h4 { font: 500 11px/1.2 'JetBrains Mono', monospace; letter-spacing: .18em; text-transform: uppercase; color: var(--t3); margin: 14px 0 6px; }
.ltc-adv-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 4px 16px; }
.ltc-adv-row { display: grid; grid-template-columns: minmax(0, 1fr) 84px 38px; gap: 6px; align-items: center; font: 400 11.5px/1.3 'JetBrains Mono', monospace; color: var(--t3); }
.ltc-adv-row input { width: 100%; min-height: 28px; padding: 2px 6px; background: var(--bg1); border: 1px solid var(--bd); border-radius: 3px; color: var(--t1); font: inherit; text-align: right; }
.ltc-adv-row i { font-style: normal; color: var(--t3); }
.ltc-adv-row.is-over span { color: var(--o); }
.ltc-adv-reset { background: none; border: 1px solid var(--bd); border-radius: 3px; color: var(--o); font: inherit; cursor: pointer; padding: 2px 4px; }
@media (max-width: 640px) { .ltc-adv-grid { grid-template-columns: 1fr; } .ltc-adv-row input, .ltc-btn { min-height: 44px; } }
.ltc-ksrc { margin-bottom: 10px; }
.ltc-auto { display: grid; gap: 2px; }
.ltc-auto-row { display: grid; grid-template-columns: minmax(0, 1fr) auto 44px 40px; gap: 6px; align-items: baseline; padding: 4px 0; border-bottom: 1px solid var(--bd); font-size: 13px; color: var(--t2); }
.ltc-auto-row b { font: 500 13px/1 'JetBrains Mono', monospace; color: var(--t1); text-align: right; font-variant-numeric: tabular-nums; }
.ltc-auto-row small { font: 400 11px/1 'JetBrains Mono', monospace; color: var(--t3); }
.ltc-auto-row i { font: 400 10.5px/1 'JetBrains Mono', monospace; font-style: normal; color: var(--g); cursor: help; }
.ltc-head .ltc-ps { margin: 14px 0 0; }
.ltc-ps .ltc-select { grid-column: 1 / -1; width: 100%; font-size: 13px; min-height: 32px; }
.ltc-autob { margin-left: 6px; padding: 0 4px; border: 0; border-radius: 3px; background: none; color: var(--g); opacity: .85;
  font: 400 11px/18px 'JetBrains Mono', monospace; cursor: pointer; vertical-align: 1px; }
.ltc-autob[data-user="true"] { color: var(--o); }
.ltc-autob:focus-visible { outline: 2px solid var(--o); outline-offset: 1px; }
/* ---- DH01 thermal view ---- */
.ltc-dh-ctl { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; margin-bottom: 10px; }
.ltc-dh-ctl .ltc-select { width: auto; min-width: 220px; font-size: 13px; min-height: 32px; }
.ltc-dh-ld { display: inline-flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ltc-dh-min { display: flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--t2); }
.ltc-dh-min output { font: 500 12.5px/1 'JetBrains Mono', monospace; color: var(--t1); min-width: 2ch; }
.ltc-dh-min label { display: inline-flex; align-items: center; gap: 8px; }
.ltc-dh-min .ltc-btn { min-width: 112px; justify-content: center; }
.ltc-dh-min output { min-width: 4ch; }
/* sequence of events: the alarm list an operator would read, in order */
.ltc-soe-wrap { margin-top: 12px; }
.ltc-soe { list-style: none; margin: 6px 0 0; padding: 0; border: 1px solid var(--bd); border-radius: 4px; background: var(--bg1); }
.ltc-soe li { display: grid; grid-template-columns: 7ch 6ch 1fr; gap: 10px; align-items: baseline; padding: 6px 10px; border-top: 1px solid var(--bd); font-size: 12.5px; color: var(--t1); border-left: 3px solid var(--t3); transition: opacity .2s ease-out; }
.ltc-soe li:first-child { border-top: 0; }
.ltc-soe time, .ltc-soe i { font: 500 11.5px/1.3 'JetBrains Mono', monospace; font-style: normal; color: var(--t2); }
.ltc-soe i { text-transform: uppercase; letter-spacing: .04em; }
.ltc-soe li.ok { border-left-color: var(--g); } .ltc-soe li.ok i { color: var(--g); }
.ltc-soe li.warn { border-left-color: var(--o); } .ltc-soe li.warn i { color: var(--o); }
.ltc-soe li.alarm, .ltc-soe li.trip { border-left-color: var(--r); } .ltc-soe li.alarm i, .ltc-soe li.trip i { color: var(--r); }
.ltc-soe li.trip { background: color-mix(in srgb, var(--r) 9%, transparent); }
.ltc-soe li.later { opacity: .42; }
@media (max-width: 640px) { .ltc-soe li { grid-template-columns: 7ch 1fr; } .ltc-soe li span { grid-column: 1 / -1; } }
.ltc-dh-wrap { border: 1px solid var(--bd); border-radius: 4px; background: var(--bg1); padding: 8px; margin-top: 8px; }
.ltc-dh-wrap canvas { display: block; width: 100%; cursor: crosshair; }
.ltc-dh-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; margin-top: 8px; font: 400 11px/1.4 'JetBrains Mono', monospace; color: var(--t3); }
.ltc-dh-legend i { display: inline-block; width: 18px; height: 10px; border-radius: 1px; }
.ltc-dh-legend b { font-weight: 400; color: var(--t2); margin-right: 4px; }
.ltc-dh-k { margin-left: 10px; display: inline-flex; align-items: center; gap: 4px; }
.ltc-dh-k i.cdu { width: 12px; height: 10px; border: 1.2px solid #00ddff; background: #0f2a33; }
.ltc-dh-k i.crah { width: 6px; height: 12px; background: #9fd8ff; }

/* ---- v3.17.1 review fixes ---- */
.ltc-dh-k i.ol { width: 14px; height: 10px; background: transparent; border: 1px solid var(--t1); }
.ltc-dh-k i.ht { width: 14px; height: 10px; border: 1px solid var(--t1); background: repeating-linear-gradient(135deg, var(--t2) 0 1px, transparent 1px 4px); }
.ltc-dh-k i.cdu { border-color: var(--c); background: var(--bg1); }
.ltc-dh-k i.crah { background: var(--t2); }
.ltc-dh-wrap canvas:focus-visible { outline: 2px solid var(--o); outline-offset: 2px; }
.ltc-dh-chain { display: grid; gap: 6px; margin: 8px 0 2px; }
.ltc-dh-chain > div { display: flex; align-items: center; gap: 8px; min-width: 0; }
.ltc-dh-chain .ltc-eyebrow { flex: 0 0 76px; }
.ltc-dh-chain ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 0; min-width: 0; }
.ltc-dh-chain li { display: inline-flex; flex-direction: column; gap: 1px; padding: 4px 8px; border: 1px solid var(--bd); border-left-width: 2px; background: var(--bg1); font: 400 11px/1.25 'JetBrains Mono', monospace; color: var(--t3); position: relative; margin-right: 14px; }
.ltc-dh-chain li b { font-weight: 500; font-size: 12px; color: var(--t1); white-space: nowrap; }
.ltc-dh-chain li:not(:last-child)::after { content: ''; position: absolute; right: -12px; top: 50%; width: 9px; height: 1px; background: var(--t3); }
.ltc-dh-chain li:not(:last-child)::before { content: ''; position: absolute; right: -13px; top: calc(50% - 3px); border: 3.5px solid transparent; border-left: 4px solid var(--t3); border-right: 0; }
.ltc-dh-chain li.ok { border-left-color: var(--c); }
.ltc-dh-chain li.warn { border-left-color: var(--o); }
.ltc-dh-chain li.warn b { color: var(--o); }
.ltc-dh-chain li.bad { border-left-color: var(--r); border-style: dashed solid dashed solid; }
.ltc-dh-chain li.bad b { color: var(--r); }
.ltc-dh-legend svg { flex: none; }
@media (max-width: 640px) { .ltc-dh-chain > div { flex-direction: column; align-items: flex-start; gap: 4px; } .ltc-dh-chain .ltc-eyebrow { flex: none; } }
.ltc-auto-info { background: none; border: 0; padding: 0 2px; font: 400 10.5px/1 'JetBrains Mono', monospace; color: var(--g); cursor: pointer; }
.ltc-auto-info:focus-visible { outline: 2px solid var(--o); outline-offset: 1px; }
.ltc-auto-why { grid-column: 1 / -1; margin: 2px 0 4px; font: 400 11.5px/1.4 'JetBrains Mono', monospace; color: var(--t3); }
@media (max-width: 640px) {
  /* touch targets ≥ 44 px, and no iOS zoom on focus (inputs below 16 px trigger it) */
  .ltc-seg button, .ltc-ps .ltc-select, .ltc-dh-ctl .ltc-select, .ltc-autob, .ltc-adv-reset, .ltc-linkbtn, .ltc-ps-adv summary, .ltc-auto-info { min-height: 44px; }
  .ltc-dh-min input[type="range"], .ltc-fields input[type="range"], .ltc-plant-fields input[type="range"] { min-height: 44px; }
  .ltc-app input, .ltc-app select, .ltc-app textarea { font-size: 16px !important; }
}
/* DH01 in 3D: an instrument stage — always dark, so temperature colours and particles read the same in both themes */
.ltc-dh-view { margin: 4px 0 8px; }
.ltc-dh-3d { margin-top: 8px; }
.ltc-3d-bar { display: flex; flex-wrap: wrap; gap: 8px 12px; margin-bottom: 8px; }
.ltc-3d-stage { position: relative; border: 1px solid var(--bd); border-radius: 4px; overflow: hidden; background: #0a0e13; }
.ltc-3d-cv { display: block; width: 100%; touch-action: none; cursor: grab; outline: none; }
.ltc-3d-cv:active { cursor: grabbing; }
.ltc-3d-cv:focus-visible { box-shadow: inset 0 0 0 2px var(--o); }
.ltc-3d-lbl { position: absolute; inset: 0; pointer-events: none; }
.ltc-3d-lbl span { position: absolute; left: 0; top: 0; white-space: nowrap; font: 500 10.5px/1 'JetBrains Mono', monospace; letter-spacing: .06em; color: #c9d4e0; background: rgba(10, 14, 19, .72); border: 1px solid rgba(201, 212, 224, .18); padding: 3px 6px; border-radius: 3px; }
.ltc-3d-hint { position: absolute; left: 10px; bottom: 8px; margin: 0; font: 400 11px/1.3 'JetBrains Mono', monospace; color: #8b98a8; pointer-events: none; }
@media (max-width: 640px) { .ltc-3d-hint { display: none; } .ltc-3d-bar .ltc-seg button { min-height: 44px; } }
.ltc-3d-hud { position: absolute; left: 10px; top: 10px; max-width: min(640px, calc(100% - 20px)); font: 400 11px/1.5 'JetBrains Mono', monospace; color: #c9d4e0; background: rgba(10, 14, 19, .78); border: 1px solid rgba(201, 212, 224, .16); border-radius: 3px; padding: 6px 9px; pointer-events: none; }
.ltc-3d-hud:empty { display: none; }
.ltc-3d-hud b { color: #f1f5f9; font-weight: 500; }
.ltc-3d-hud i { font-style: normal; color: #f5a524; } .ltc-3d-hud i.ok { color: #22c55e; }
.ltc-3d-at { display: inline-flex; align-items: center; gap: 8px; font-size: 12.5px; color: var(--t2); }
.ltc-3d-at output { font: 500 12px/1 'JetBrains Mono', monospace; color: var(--t1); min-width: 6ch; }
.ltc-3d-hud span { display: block; }
.ltc-3d-hud [data-ix], .ltc-3d-sum [data-ix] { pointer-events: auto; cursor: help; border-bottom: 1px dotted currentColor; }
.ltc-3d-hud sub, .ltc-3d-sum sub { font-size: 8px; }
.ltc-3d-sum { display: none; margin: 6px 0 0; font: 400 11px/1.5 'JetBrains Mono', monospace; color: var(--t2); }
.ltc-3d-sum b { color: var(--t1); font-weight: 500; }
.ltc-3d-sum i { font-style: normal; }
@media (max-width: 640px) { .ltc-3d-hud { font-size: 10px; } .ltc-3d-hud span.x { display: none; } .ltc-3d-sum { display: block; } }
.ltc-3d-at[hidden] { display: none; }
.ltc-3d-cap { position: absolute; left: 50%; bottom: 34px; transform: translateX(-50%); max-width: min(620px, calc(100% - 24px)); font: 400 12px/1.5 'IBM Plex Sans', sans-serif; color: #e6edf5; background: rgba(10, 14, 19, .82); border: 1px solid rgba(201, 212, 224, .2); border-radius: 3px; padding: 7px 11px; pointer-events: none; }
.ltc-3d-cap b { font: 500 11px/1 'JetBrains Mono', monospace; color: #f5a524; margin-right: 6px; }
.ltc-3d-cap[hidden] { display: none; }
@media (max-width: 640px) { .ltc-3d-cap { bottom: 8px; font-size: 11px; } }
.ltc-3d-charts { display: grid; grid-template-columns: minmax(0, 560fr) minmax(0, 330fr); gap: 12px; margin: 10px 0 0; }
.ltc-3d-charts figure { margin: 0; min-width: 0; }
.ltc-3d-charts figcaption { font: 500 11px/1.4 'JetBrains Mono', monospace; color: var(--t2); margin: 0 0 4px; }
.ltc-3d-charts:not(.on) { display: none; }
.ltc-3d-scat circle { cursor: help; }
@media (max-width: 640px) { .ltc-3d-charts { grid-template-columns: minmax(0, 1fr); } }
.ltc-3d-probe { position: absolute; left: 0; top: 0; max-width: 300px; font: 400 11px/1.5 'JetBrains Mono', monospace; color: #c9d4e0; background: rgba(10, 14, 19, .9); border: 1px solid rgba(201, 212, 224, .22); border-radius: 3px; padding: 6px 9px; pointer-events: none; }
.ltc-3d-probe[hidden] { display: none; }
.ltc-3d-probe b { color: #f1f5f9; font-weight: 500; }
.ltc-3d-probe span { color: #8b98a8; }
.ltc-3d-scale { position: absolute; right: 10px; bottom: 30px; width: min(260px, calc(100% - 20px)); display: grid; grid-template-columns: auto 1fr auto; gap: 2px 8px; font: 400 10.5px/1.3 'JetBrains Mono', monospace; color: #8b98a8; pointer-events: none; }
.ltc-3d-scale:empty { display: none; }
.ltc-3d-scale i { grid-column: 1 / -1; height: 6px; border-radius: 1px; }
.ltc-3d-scale span:nth-of-type(2) { text-align: center; color: #c9d4e0; }
@media (max-width: 640px) { .ltc-3d-scale { left: 10px; width: auto; } .ltc-3d-probe { max-width: calc(100% - 12px); } }